{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "1.16.0"
              },
              {
                "fixed": "1.16.1"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "0c23a223067201c368035e82954c11eb2578a33b"
            },
            {
              "fixed": "46301256333c90b7faac7aa126effe72ec16d16e"
            }
          ],
          "repo": "https://github.com/follow-redirects/follow-redirects",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-8r9p-f939-6h3c"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-185",
      "CWE-200"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-111755.json"
  },
  "details": "follow-redirects is a Node.js HTTP and HTTPS client wrapper that automatically follows redirects. From 1.16.0 until 1.16.1, escapeRegex leaves valid header-name metacharacters unescaped in sensitiveHeaders. When an application declares a sensitive header whose name contains ^ or | and follows a cross-origin or HTTPS-to-HTTP redirect, unescaped regular-expression metacharacters prevent the generated filter from matching the declared header name, and the credential header is forwarded to an attacker-controlled redirect target. This issue is fixed in version 1.16.1.",
  "id": "CVE-2026-111755",
  "modified": "2026-10-20T02:30:51.446994598Z",
  "published": "2026-10-19T17:27:09.215Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-111755.json"
    },
    {
      "type": "FIX",
      "url": "https://github.com/follow-redirects/follow-redirects/commit/080a76d0e125b37bf81717368a61d5dc37aa56c8"
    },
    {
      "type": "WEB",
      "url": "https://github.com/follow-redirects/follow-redirects/releases/tag/v1.16.1"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/follow-redirects/follow-redirects/security/advisories/GHSA-8r9p-f939-6h3c"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-111755"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "follow-redirects sensitiveHeaders regex escaping can expose credential headers"
}